package lab01;

public class Diqiti {
    public static void main(String[] args) {
        int score=0;
        if (score>=85) System.out.println("A");
        else if (score>=70) System.out.println("B"
        );
        else  if (score>=60) System.out.println("C");
        else System.out.println("D");
    }
}
